Keep Only the Highest Set Bit

Code

#include <stdio.h>
#include <stdint.h>

// Complete the function
uint16_t highest_set_bit(uint16_t reg) {
    // Your logic here
    if((reg & (reg-1))==0)
    {
        return reg;
    }
    else
    {
        while(reg != 0)
        {
            reg = reg & (reg-1);
            if((reg & (reg-1))==0)
            {
                return reg;
            }
        }

    }
    return 0;
}

int main() {
    uint16_t reg;
    scanf("%hu", &reg);

    uint16_t result = highest_set_bit(reg);
    printf("%hu", result);
    return 0;
}

Solving Approach